diff --git a/app/datatables/sample_datatable.rb b/app/datatables/sample_datatable.rb
index fcbd27fe1..2f646bb64 100644
--- a/app/datatables/sample_datatable.rb
+++ b/app/datatables/sample_datatable.rb
@@ -134,11 +134,18 @@ class SampleDatatable < AjaxDatatablesRails::Base
       @assigned_samples = @project.assigned_samples
       ids = @project.my_modules_ids
 
-      samples = samples.joins("LEFT OUTER JOIN sample_my_modules ON
-                              (samples.id = sample_my_modules.sample_id AND
-                              (sample_my_modules.my_module_id IN (#{ids}) OR
-                              sample_my_modules.id IS NULL))")
-                              .references(:sample_my_modules)
+      if ids.blank?
+        samples = samples.joins('LEFT OUTER JOIN sample_my_modules ON
+                                (samples.id = sample_my_modules.sample_id AND
+                                sample_my_modules.id IS NULL)')
+                         .references(:sample_my_modules)
+      else
+        samples = samples.joins("LEFT OUTER JOIN sample_my_modules ON
+                                (samples.id = sample_my_modules.sample_id AND
+                                (sample_my_modules.my_module_id IN (#{ids}) OR
+                                sample_my_modules.id IS NULL))")
+                         .references(:sample_my_modules)
+      end
     elsif @experiment
       @assigned_samples = @experiment.assigned_samples
       ids = @experiment.my_modules.select(:id)